“Pupil Slicer, although undeniably a trio, is vocalist/guitarist Davies’ brainchild through and through, seen in the guitar-and-vocals focus. Mirrors, following up an EP and a series of splits since their 2015 formation, combines its assets into a mathcore Frankenstein’s monster: twisted guitar work and frantic shrieks, Josh Andrews’ blasting drum tracks of an abandoned post-black project, and a healthy dose of Luke Fabian’s formidable bass and gutturals.” Eye on the prize.